Machine shop 440 Mopar questions?

my68barracuda said

Possibly they

Concerning pistons, cast, hypers, forged will all have different clearance requirements. I know one can assume that the piston mfg made the pistons to a nominal size, but I would rather not be guessing on something as critical as piston clearances.
Wonder what kind of finish the MS put on the cylinder bores. It is different depending upon moly vs chrome rings.
The same thing goes for the head deck finish. A multilayered gasket wants a different finish than a composite gasket does.
If the customer does not specify what he wants a good machine shop would ask.

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You don’t have to assume or guess the piston clearance. You can measure the bore and the piston. Or have the shop measure them if you don't have the tools . It would be nice to have the piston before hand but you still have options. If a piston is out of spec either before or after the block is machined you can send the pistons back. I think you will find todays pistons are pretty consistent but if they're not send them back. When he gets his pistons he can have whoever measure both pistons and bore and if both were both done correctly he is good to go. I wouldn't assemble without measuring. If you did then you are assuming or guessing.